Bhatt Chet R, Alfarraj Bader, Ayyalasomayajula Krishna K, Ghany Charles, Yueh Fang Y, Singh Jagdish P
Appl Opt. 2015 Dec 1;54(34):10264-71. doi: 10.1364/AO.54.010264.
Laser Induced Breakdown Spectroscopy (LIBS) is an ideal analytical technique for in situ analysis of elemental composition. We have performed a comparative study of the quantitative and qualitative analysis of atomic and molecular emission from LIBS spectra. In our experiments, a mixture of SrCl2 and Al2O3 in powder form was used as a sample. The atomic emission from Sr and molecular emission from SrCl and SrO observed in LIBS spectra were analyzed. The optimum laser energies, gate delays, and gate widths for selected atomic lines and molecular bands were determined from spectra recorded at various experimental parameters. These optimum experimental conditions were used to collect calibration data, and the calibration curves were used to predict the Sr concentration. Limits of detection (LODs) for selected atomic and molecular emission spectra were determined.
激光诱导击穿光谱法（LIBS）是用于元素组成原位分析的理想分析技术。我们对LIBS光谱中原子和分子发射的定量和定性分析进行了比较研究。在我们的实验中，使用粉末形式的SrCl2和Al2O3混合物作为样品。分析了LIBS光谱中观察到的Sr的原子发射以及SrCl和SrO的分子发射。根据在各种实验参数下记录的光谱，确定了选定原子线和分子带的最佳激光能量、门延迟和门宽度。这些最佳实验条件用于收集校准数据，校准曲线用于预测Sr浓度。确定了选定原子和分子发射光谱的检测限（LOD）。
